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hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorPROSPERO, Simone
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLUNG-ESCARMANT, Brigitte
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDUTECH, Christian Cyril
dc.date.accessioned2022-10-12T12:41:00Z
dc.date.available2022-10-12T12:41:00Z
dc.date.issued2008
dc.identifier.issn0962-1083
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/157071
dc.description.abstractEnThe Landes de Gascogne forest (southwestern France) is the largest maritime pine (Pinus pinaster) plantation in Europe. Armillaria root disease (Armillaria ostoyae) has been reported since the early 1920s in the coastal area (western sector), but its incidence over the last 20 years has increased in the eastern sector. We investigated the genetic structure of the A. ostoyae population in this forest, focusing particularly on geographical differentiation potentially indicative of disease expansion in this area. In total, 531 isolates obtained from mycelial fans on symptomatic trees or undecayed stumps in 31 different disease foci were genotyped at five microsatellite loci. In 20 of these disease foci, a single genotype dominated, reflecting a predominantly clonal local spread of A. ostoyae. By contrast, at the regional scale, A. ostoyae probably spreads mostly via basidiospores (sexual spores), as no genotype common to several disease foci was identified. The absence of a clear pattern of isolation by distance may indicate either substantial gene flow or stochastic colonisation independent of spatial distance. The gradient of genetic diversity from the coast inwards and the greater genetic divergence of the eastern disease foci are consistent with the expansion of the A. ostoyae population from the coast eastwards.
dc.language.isoen
dc.publisherWiley
dc.subjectARMILLARIA
dc.subjectMICROSATELLITES
dc.subjectPOPULATION EXPANSION
dc.subject.enBASIDIOSPORES
dc.subject.enDISPERSAL
dc.subject.enGENETIC DIFFERENTIATION
dc.subject.enNATIVE PATHOGEN
dc.subject.enPIN MARITIME
dc.title.enGenetic structure of an expanding Armillaria root rot fungus (Armillaria ostoyae) population in a managed pine forest in southwestern France
dc.typeArticle de revue
dc.identifier.doi10.1111/j.1365-294X.2007.03829.x
dc.subject.halSciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire
bordeaux.journalMolecular Ecology
bordeaux.page3366-3378
bordeaux.volume17
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue14
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02669028
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02669028v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Molecular%20Ecology&rft.date=2008&rft.volume=17&rft.issue=14&rft.spage=3366-3378&rft.epage=3366-3378&rft.eissn=0962-1083&rft.issn=0962-1083&rft.au=PROSPERO,%20Simone&LUNG-ESCARMANT,%20Brigitte&DUTECH,%20Christian%20Cyril&rft.genre=article


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